Monad classes using type families, with instances for various
monad transformers, inspired by the paper /Functional Programming
with Overloading and Higher-Order Polymorphism/, by Mark P
Jones, in Advanced School of Functional Programming, 1995
(http://web.cecs.pdx.edu/~mpj/pubs/springschool.html).

This package is almost a compatible replacement for the mtl-tf package.